Bismarck Weather Forecast

    • 42
    • 59

    Mostly Sunny

    • 43
    • 64

    Sunny

    • 45
    • 66

    Mostly Sunny

    • 49
    • 69

    Mostly Sunny

    • 50
    • 72

    Mostly Sunny

    • 49
    • 71

    Mostly Sunny

    • 50
    • 72

    Partly Sunny

Today 7 Sep Western Grant

Sunny. Highs in the upper 60s. Except in the lower 60s at the higher Elevations. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 7 Sep Western Grant

Mostly clear. Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Bismarck Temperature Statistics

September Temperature

Garrett County Airport (25.5 miles)

  • Lowest 2 September, 2025

    51.8 °F

  • Average September

    61.5 °F

  • Highest 3 September, 2025

    75.2 °F

Climate (2020–Present)

Garrett County Airport (25.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    41.8 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    56.4 °F
Get WillyWeather+ to remove ads